基于信息量法-AHP组合模型的十堰经开区地质灾害危险性评价  

Risk Assessment of Geological Hazards in Shiyan Economic Development Zone Based on Information Quantity Method and AHP Combined Model

作　　者：陈露军 卢应发 鲁培培 CHEN Lujun;LU Yingfa;LU Peipei(School of Civil Engineering,Architecture and Environment,Hubei University of Technology,Wuhan 430068,China;Hubei Zhengyuan Engineering Technology Co.,Ltd.,Shiyan 442000,China)

机构地区：[1]湖北工业大学土木建筑与环境学院,湖北武汉430068 [2]湖北正源工程技术有限公司,湖北十堰442000

出　　处：《湖南科技大学学报(自然科学版)》2024年第4期53-60,共8页Journal of Hunan University of Science And Technology:Natural Science Edition

基　　金：国家自然科学基金资助项目(41641027,42071264);三峡后续工作地质灾害防治项目资助(0001212015CC60005)。

摘　　要：以十堰经开区为研究区,选择地质构造、工程地质岩组、距水系距离、坡度、坡型、坡高和植被覆盖率等作为评价研究区的敏感性指标,在滑坡崩塌灾害易发性评价的基础上综合考虑地质灾害形成的诱发因素(降雨、人类工程活动),采用信息量法-AHP组合模型求得各个评价因子权重乘以对应因子信息量的值,基于ArcGIS软件的空间分析叠加功能得到经开区地质灾害危险性区划图.结果表明:基于信息量法-AHP组合模型下的危险性评价的准确性明显高于单一赋权模型;极高危险区、高危险区、中危险区和低危险区的面积分别占研究区面积的8.45%,26.23%,30.57%,34.75%,极高危险区和高危险区主要分布在降雨量为880~920 mm、距水系距离近及人类工程活动强度大的区域.研究成果可为治理该区滑坡崩塌地质灾害提供一定的参考.The risk assessment of regional geological disasters is an important part of the prevention and control of geological disasters.Taking Shiyan Economic Development Zone as the research area,this paper selects geological structure,engineering geological rock group,distance from water system,slope,slope type,slope height,and vegetation coverage rate as the sensitivity indicators for evaluation of the research area.On the basis of landslide and collapse hazard susceptibility evaluation,the inducing factors(rainfall,human engineering activities)for formation of geological disasters are comprehensively considered,the combination model of information quantity method and AHP is used to obtain the weight of each evaluation factor multiplied by the information quantity of the corresponding factor.Based on the spatial analysis and superposition function of ArcGIS software,the geological disaster risk zoning map of ETDZ is obtained.Results show that the accuracy of risk assessment based on the combination of information method and AHP is significantly higher than that of the single weighting model.The subarea of extremely high risk area,high risk area,medium risk area and low risk area respectively accounts for 8.45%,26.23%,30.57%and 34.75%of the study area,respectively.The extremely high risk area and high risk area are mainly distributed in the area with 880~920 mm rainfall,close to the water system and high intensity of human engineering activities.The research results can provide some scientific basis for the effective control of landslide and collapse geological disasters in this area.

关 键 词：地质灾害 信息量法 AHP ARCGIS 危险性评价 

分 类 号：TV122[水利工程—水文学及水资源]